Hydraulic Breakers
Mining & Quarrying · 30–36 t crawler excavator
Secondary Breaking in a Granite Quarry
Oversize granite blocks after blasting were slowing the primary crusher. A 40G-class open breaker on a 36 t excavator reduces boulders at the muck pile so haul trucks feed the crusher continuously.
The challenge
After each blast a share of the rock is too large for the crusher opening. Re-blasting is slow, needs permits and stops traffic, while drop-ball methods are imprecise and unsafe near equipment.
Our solution
- Heavy open-type breaker in the 40G class (160 mm chisel) matched to the carrier’s 200+ L/min auxiliary flow.
- Bracket and pins machined to the existing hydraulic quick coupler so the excavator can swap back to a bucket for loading.
- Blunt chisels for brittle granite and a spare power-cell seal kit kept on site.
- Remote video commissioning: flow and pressure checked with the operator before first shift.
Results on site
- No secondary blasting required for oversize
- Crusher fed continuously from the muck pile
- One machine for breaking and loading via quick coupler
Configuration
| Carrier | 36 t excavator |
|---|---|
| Breaker class | 40G, 160 mm chisel |
| Flow / pressure | 180–240 L/min · 170–200 bar |
| Coupler | Hydraulic, double lock |
Attachments used
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